Science Vocab
Published on Mar 23, 2016
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PRESENTATION OUTLINE
Soil-the portion of the earth's surface consisting of disintegrated rock and humus.
Photo by kqedquest
Soil Profile-a vertical succession of horizons, commonly lettered A, B, C (beginning at the surface), that have been subjected to soil-forming processes, chiefly leaching and oxidation.
Photo by Soil Science @ NC State
Soil Horizon-a distinct layer of soil, approximately parallel with the land surface, whose properties develop from the combined actions of living organisms and percolating water
Photo by snre
pH-the symbol for the logarithm of the reciprocal of hydrogen ion concentration in gram atoms per liter, used to express the acidity or alkalinity of a solution on a scale of 0 to 14, where less than 7 represents acidity, 7 neutrality, and more than 7 alkalinity.
Photo by multisanti
Agriculture-the science, art, or occupation concerned with cultivating land, raising crops, and feeding, breeding, and raising livestock; farming.
Photo by Florian Seiffert (F*)
Humus-the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth.
Photo by Steve A Johnson
Arable Land-capable of producing crops; suitable for farming; suited to the plow and for tillage:
Photo by Blue Square Thing
